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serg [7]
4 years ago
6

When converting an “ordinary” number that is greater than 1 to scientific notation, how many non-zero digits are to the LEFT of

the decimal point when you are finished?
Chemistry
1 answer:
oksian1 [2.3K]4 years ago
5 0

Answer: 0 I think

Explanation:

pretty sure its zero because  i learned it last year but im in middle school so you might want to look it up.

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The solubility of KNO3(s) in water increases as the..
makvit [3.9K]
The answer would be b. Temperature of the solution increases 

Temperature determines the kinetic energy of the water molecule. Higher temperature will cause the molecule to moves faster and the compound (KNO3) could break solute molecule easier make it become more soluble. A higher pressure will increase the solubility of a gas, not solid


4 0
4 years ago
For the reaction so3 + h2o h2so4, calculate the percent yield if 500. g of sulfur trioxide react with excess water to produce 57
Lelu [443]
The %  yield  if  500 g of  sulfur trioxide  reacted  with  excess  water to   produce  575 g  of  sulfuric  acid is calculated using  the  below  formula


%  yield = actual  yield/ theoretical  yield  x100

actual  yield =575 grams
to  calculate  theoretical  yield
find the  moles  of SO3   used =mass/molar  mass
=  500g/   80 g/mol =6.25  moles

SO3+H2O=H2SO4
by   use of  mole ratio  of SO3  :  H2SO4 which  is 1:1  the moles of H2SO4  is  also=  6.25  moles

the theoretical  yield of H2SO4 is therefore =  moles /molar  mass
=  6.25  x98=  612.5 grams

%yield  is therefore= 575 g/612 g   x100=  93.9  %

5 0
3 years ago
What is the electron configuration of an element with atomic number 20?
Vedmedyk [2.9K]
[Ar]4s^2
hope it helps

8 0
3 years ago
Read 2 more answers
The ""size"" of an atom is sometimes defined by the radius of a sphere that contains 90% of the charge density of the electrons.
vfiekz [6]

Answer:

3/2a

Explanation:

The complete step by step answer is found in the attachment

8 0
4 years ago
B.Use the words inside the box to complete the chart below​
Dennis_Churaev [7]

Answer:

Answered below

Explanation:

>> ice is solid

>> water is liquid

>> Steam is gas

>> Ice → water = melting

>> water → steam = evaporation

>> steam → water = condensation

>> water → ice = freezing

7 0
3 years ago
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